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Be aware how your voice works. Have you ever pulled the open end of an air filled balloon tight and the air rushes out at a squeal like pitch, then the more you open the balloon, the quieter and lower the pitch gets. This is a literal representation of your vocal chords.
1 Make sure not to force your vocal cords to make a high pitch sound. 2  It will take time before you can reach the comfortable high pitch for your vocal cord and it needs a lot of practice. 3  Learn how to modulate your voice.4  This is a good practice to stretch the voice muscles. Make sure not to force your vocal cords to make a high pitch sound. 2  It will take time before you can reach the comfortable high pitch for your vocal cord and it needs a lot of practice. 3  Learn how to modulate your voice.